/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package remoting.channel;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

public final class MultiMessage implements Iterable {

  private final List messages = new ArrayList();

  private MultiMessage() {
  }

  public static MultiMessage createFromCollection(Collection collection) {
    MultiMessage result = new MultiMessage();
    result.addMessages(collection);
    return result;
  }

  public static MultiMessage createFromArray(Object... args) {
    return createFromCollection(Arrays.asList(args));
  }

  public static MultiMessage create() {
    return new MultiMessage();
  }

  public void addMessage(Object msg) {
    messages.add(msg);
  }

  public void addMessages(Collection collection) {
    messages.addAll(collection);
  }

  public Collection getMessages() {
    return Collections.unmodifiableCollection(messages);
  }

  public int size() {
    return messages.size();
  }

  public Object get(int index) {
    return messages.get(index);
  }

  public boolean isEmpty() {
    return messages.isEmpty();
  }

  public Collection removeMessages() {
    Collection result = Collections.unmodifiableCollection(messages);
    messages.clear();
    return result;
  }

  @Override
  public Iterator iterator() {
    return messages.iterator();
  }

}
